Kinsman Physics Productions, Rochester, New York, United States and Photo Researchers Inc, New York, New York.

TThis image is the outcome of a series of photographs made of songbirds in flight.
A high-speed capping shutter was used in combination with a high-speed electronic flash to capture the birds as they approached a bird feeder. An infrared beam was used to detect the bird and trigger the system. The equipment produced a flash duration of 1/20,000th of a second